Watch SE 3 Sport Band 44mm
Apple Watch SE 3 Sport Band 44mm Midnight - M/L 64GB
Apple Watch SE 3 Sport Band 44mm Midnight - M/L 64GB

Apple Watch SE 3 Sport Band 44mm

5G SA

Watch SE 3 Sport Band 44mm
Apple Watch SE 3 Sport Band 44mm Midnight - M/L 64GB
Apple Watch SE 3 Sport Band 44mm Midnight - M/L 64GB
Free gift Midnight - M/L
Capacity 64GB

In stock

Order by midnight for free next-working-day home delivery
Apple Watch SE 3 is packed with essentials like sleep score, Always-On display, Activity rings and more. All at a great price.
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Pay Monthly contracts and deals

Pick a pre-built plan
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Unlimited
Fair usage applies
Classic plan
48 month contract
Upfront
+
£
6
.75
MONTHLY
From Jul 2026 bill £14.50
From Apr 2027 bill £15.25

Monthly cost breakdown:

£6.75 Device +£0.00† Airtime

Features

Tech specs

44mm

Smartwatch Screen Size

Up to 18 hours

Battery Life

5G

Data Connectivity

33g

Weight

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A network you can trust

We're here for you whenever you need us. So you can stay connected to the people that matter.

Get Priority

From unique prize draws to unforgettable moments. Priority gives you invite-only access to gigs, perks and experiences.

My O2

Check your bill, view your balance, add Bolt Ons and more. Anytime, anywhere.

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FAQs

When was the Apple Watch SE 3 44mm release date?

Apple Watch SE 3 44mm was announced on 9th September, 2025 and the official Watch SE 3 release date was on 19th September, 2025. It's available to buy now at O2.

What are the Apple Watch SE 3 44mm specs?

Introducing Apple Watch SE 3.
 

Designed to keep you connected, active and informed. Built with a bright, Always-On Retina display that’s easy to read at a glance. Perfect for when you're on the move.
 

Packed with Apple’s latest S10 chip, it’s fast, responsive, and efficient - handling apps, notifications, and fitness tracking seamlessly.
 

Looking to upgrade your fitness? Watch SE 3 is loaded with features to help you achieve your personal best, with heart rate monitoring, sleep score and sleep apnoea workout detection, and fall detection.

 

Keep it moving with up to 32 hours of battery life in low power mode or up to 18 hours of power on a full single charge with normal use. Watch SE 3 charges 2x faster than before and supports fast-charging, meaning you’ll be ready to set off in no time.

Can I use Apple Watch SE 3 44mm for sleep analysis?

Yes, you can. Watch SE 3 is built to track your sleep and notify you for possible sleep apnoea. View your sleep score to track how well you've rested. It’s sleep insights made simple, right on your wrist.

What software does Apple Watch SE 3 44mm use?

Watch SE 3 runs watchOS 26 with new AI-driven features, smarter notifications, and smooth integration with iPhone and other Apple devices.

What colours does Apple Watch SE 3 44mm come in?

Watch SE 3 is designed with versatility and style in mind. Available in stunning recycled aluminium midnight finish.

What's the Apple Watch SE 3 44mm connectivity like?

Supporting both GPS and cellular options (eSIM-ready), along with the Bluetooth 5.3, Wi‑Fi 4 and 5G connectivity. Watch SE 3 keeps you connected for calls and messages on the go.

What is the Apple Watch SE 3 44mm battery like?

Speed through the day with ease using Apple Watch SE 3's long-lasting battery life. Delivering up to 18 hours of power with normal use or up to 32 hours of battery life in low power mode, it'll keep up with you and your busy lifestyle no matter what.

Is Apple Watch SE 3 44mm waterproof?

Almost - but not quite. Water resistant up to 50 metres, you can hit your personal best in the pool or run through a downpour - Watch SE 3 has got your back.

What are the main Apple Watch SE 3 44mm health features?

Advance your health tracking to the next level with Watch SE 3 44mm. With blood oxygen monitoring and sleep pattern tracking, you'll be able to stay close to your progress and make sure you're always on track.
 

Featuring alerts for crash detection, cycle tracking, high or low heart rate and fall detection to make sure you stay safe while pushing towards your goals.
 

Take your workouts underwater with water resistance up to 50 metres. Track your swims, map routes in open water and measure your performance.

Where can I find Apple Watch SE 3 44mm deals?

We have a range of plans to help you spread the cost. Explore all of our best Watch SE 3 44mm Pay Monthly deals, take a look at our pre-built tariffs, or tailor one to you. Available now at O2.

Go to help and support

*Subject to Annual Price Increase

Monthly price of your Airtime Plan will increase by £2.50 each April, except Data Only and Smartwatch Plans which will increase by 75p. Out of bundle charges increase by 5% every 1 April.

Your Custom Plan - Representative Example

Duration of Device Plan

48 months

Monthly device payment

£6.75

Credit amount

£324.00

Interest rate (fixed)

0%

Representative APR

0%

Upfront cost

£1.00

Total amount payable for device

£325.00

Cash price

£325.00

Direct purchases only. Pay the cash price for your device or spread the cost over 3 to 36 months (excludes dongles). Certain device costs available to be spread over 3 to 48 months. The device cost will be the same whatever you choose. There may be an upfront cost. You can pay off your Device Plan at any time and choose to keep your Airtime Plan, upgrade it, or leave. If you are in the first 24 months of your Device Plan and you cancel your Airtime Plan you will have to pay the remainder of your Device Plan in full. After 24 months you can keep your Airtime Plan, upgrade it, or end it without affecting your Device Plan.

 

 

Plans unlink after 24 months

 

For customers who took out an O2 Refresh custom plan on or after 17 December 2021, your Airtime Plan and Device plans unlink after 24 months. This means that if you are in the first 24 months of your Device Plan you will have to pay off your Device Plan in full if you decide to end your Airtime Plan (but we won’t charge you an Early Termination Charge to exit your Airtime Plan). 

 

After 24 months you can: keep your Airtime and Device Plans without changing anything, Cancel your Airtime Plan and keep paying off your Device Plan instalments or, Cancel your Airtime Plan and pay off your Device Plan in full. For customers who took out an O2 Refresh custom plan before the 17 December 2021, the Airtime and Device Plans remain linked for the duration of the Device Plan, this means you will have to pay off your Device Plan in full if you decide to end your Airtime Plan at any point (but we won’t charge you an Early Termination Charge to exit your Airtime Plan).